CRYSTAL MODIFICATION OF PIGMENT RED 53:1

of the disclosure: A novel crystallographic modification (.beta.-modification) of the pigment C I. Pigment Red 53:1 is described and claimed which has characteristic reflection values in its X-ray diffraction pattern obtained by means of Cu-K.alpha. radiation. This novel pigment form is obtained by...

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Bibliographic Details
Main Authors DEUBEL, REINHOLD, WESTER, NORBERT, SCHUI, FRANZ
Format Patent
LanguageEnglish
French
Published 31.03.1987
Edition4
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:of the disclosure: A novel crystallographic modification (.beta.-modification) of the pigment C I. Pigment Red 53:1 is described and claimed which has characteristic reflection values in its X-ray diffraction pattern obtained by means of Cu-K.alpha. radiation. This novel pigment form is obtained by reacting an aqueous solution of an alkali metal or ammonium salt of the formula 1 (1) with the equivalent amount of a water-soluble barium salt in the presence of a compound of the formula 2 (2), The modification is distinguished by a more yellowish-red shade as compared to the known .alpha.-modifiaction.
Bibliography:Application Number: CA19830431175